#include <iostream>
 
using namespace std;
 
int main()
{
    int t=0,k=0;
 
    do
    {
    cin>>t;
    }
    while(t>100 || t<1);
 
    for (int i=0 ; i<t ; i++)
    {
        do
        {
        cin>>k;
        }
        while(k<1 || k>1000);
 
        char zdanie[k];
 
        for (int j=0 ; j<k ; j++)
        {
            cin>>zdanie[j];
        }
 
        for (int m=0 ; m<k/2 ; m++)
        {
            cout<<zdanie[m];
        }
        cout<<endl;
    }
    return 0;
}
 

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Mwo4CnBpZXJ3c3p5CjYKbHViaWVjCjEwCmt0b3RvenJvYmk=

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8
pierwszy
6
lubiec
10
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